The correct answer is - Large numbers of migratory birds;
The number of the migratory birds has always been pretty high and it hadn't resulted in the drying up of the Ogallala Aquifer, not to mention that those birds can not even reach that water because it is underground. Also, the number of the migratory birds have been steadily lowering, so even if they were using that water for drinking, it wouldn't have caused the drying out.
The Ogallala Aquifer has started to dry out because of numerous reasons, with the usage of its water for irrigation being the prime reason. The droughts have become longer, and the temperatures little higher, while the rainfall slightly smaller, so all of that affected the reserves of water in the aquifer negatively.
Answer:
The Seven Years' War was a conflict between France and Great Britain that took place between 1756 and 1763, and faced both European powers and their allies in various territories, including North America.
In North America, both nations had colonies of considerable importance: France had the colony of New France in what is now Quebec, Canada; while Great Britain had its Thirteen Colonies on the coast of the Atlantic Ocean. The two nations were vying for control of the Great Lakes. Thus, when the war broke out, the colonies of both countries faced each other over the disputed territories, ending with the British victory and the cession by France of all the territories of it on the continent.
Even so, the population of Quebec continued to maintain its customs (its Latin culture, its Catholic religion against British Anglicanism and, fundamentally, its French language). This situation was maintained over the years, and today it is possible to observe in Canada a bilingualism at the national level, with the French language being predominant in the province of Quebec, and the English language in the rest of the country.
Wall Street Crash is the answer I think
The White settlers tried to trade with them, and made alliances and treaties, including them using only limited amounts of land
hope this helps
